All posts by spinningmagnets

Grew up in Los Angeles California, US Navy submarine mechanic from 1977-81/SanDiego. Hydraulic mechanic in the 1980's/Los Angeles. Heavy equipment operator in the 1990's/traveled to various locations. Dump truck driver in the 2000's/SW Utah. Currently a water plant operator since 2010/NW Kansas

Ferro Fluid Installation Guide

Feb 13, 2018No Comments

If you want to install Ferro Fluid in your large direct-drive hubmotor, this is a pictorial to help you do that. Ferro Fluid (FF) doesn’t

Sur-Ron Firefly, an affordable and light el...

Jan 09, 2018No Comments

Sur Ron is a new light electric off-road electric motorcycle. I feel a little odd calling it a motorcycle, but it doesn’t have pedals, so

Custom Build Gallery, the Laprise Boardtrac...

Sep 29, 20173 Comments

This tribute reproduction of a vintage board-track racer really impressed me, and it is one of the most exciting ebikes I’ve had the pleasure of

The DIY Junkyard E-BMX Friction Drive

Jul 30, 2017No Comments

I have seen youtube videos on a regular basis that show an old cordless drill being used as a drive-motor for a small bicycle. I’ve

What’s inside an 18650 cell? And why ...

Jul 26, 20172 Comments

There has been a boom in ebike builders making their own battery packs out of the popular 18650-format cells (18mm diameter, 65mm long), and I

Lost Sierra Electric Bike Festival 2017, an...

Jul 15, 20171 Comment

EcoBikeAdventures.com hosts rides in the mountains of central California, and they sponsored a fantastic annual event called the “Lost Sierra Electric Bike Festival”. When the

My INSANE 3300 Watt, 84 Volt, ERT-Kitted BB...

Jul 10, 20172 Comments

One thing I can tell you for sure about the ERT External Sinewave Controller Kit: don’t take it through airport security. ______________________________ by Patrick M.

Custom Build Gallery, Richards’ Tango...

Jul 07, 2017No Comments

This Ruff Cycle “Tango” framed Cruiser has a simple drive system, but…it is the style and accessory choices that the owner made…which make it such

Parenting Tip #42: Electric Bikes Are Good ...

Jul 06, 20171 Comment

While selling my old e-bike build on Craigslist I had a very nice mother contact me looking for more information on my ebike and on

DIY 18650-cell battery-pack building KITS, ...

Jun 21, 20171 Comment

Recently, we have seen several kits for assembling a battery pack out of 18650 cells. Here are some examples, so you can see if that